参数资料
型号: W9425G6JB-5
厂商: WINBOND ELECTRONICS CORP
元件分类: DRAM
英文描述: DDR DRAM, PBGA60
封装: 8 X 13 MM, ROHS COMPLIANT, TFBGA-60
文件页数: 14/50页
文件大小: 852K
代理商: W9425G6JB-5
W9425G6JB
Publication Release Date: Oct. 08, 2010
- 21 -
Revision A01
8.3 Function Truth Table for CKE
CURRENT
STATE
CKE
CS
RAS CAS
WE
ADDRESS
ACTION
NOTES
n-1
n
Self Refresh
H
X
INVALID
L
H
X
Exit Self Refresh->Idle after tXSNR
L
H
L
H
X
Exit Self Refresh->Idle after tXSNR
L
H
L
H
L
X
ILLEGAL
L
H
L
X
ILLEGAL
L
X
Maintain Self Refresh
Power Down
H
X
INVALID
L
H
X
Exit Power down->Idle after tIS
L
X
Maintain power down mode
All banks Idle
H
X
Refer to Function Truth Table
H
L
H
X
Enter Power down
2
H
L
H
X
Enter Power down
2
H
L
H
X
Self Refresh
1
H
L
H
L
X
ILLEGAL
H
L
X
ILLEGAL
L
X
Power down
Row Active
H
X
Refer to Function Truth Table
H
L
H
X
Enter Power down
3
H
L
H
X
Enter Power down
3
H
L
H
X
ILLEGAL
H
L
H
L
X
ILLEGAL
H
L
X
ILLEGAL
L
X
Power down
Any State
Other Than
Listed Above
H
X
Refer to Function Truth Table
Notes
:
1. Self refresh can enter only from the all banks idle state.
2. Power Down occurs when all banks are idle; this mode is referred to as precharge power down.
3. Power Down occurs when there is a row active in any bank; this mode is referred to as active power down.
Remark: H = High level, L = Low level, X = High or Low level (Don’t care), V = Valid data
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